snmpwalks works but snmp_exporter complains with error in unmarshalResponse: error decoding value: error parsing OID Value: invalid OID length

[vcarceler]

We have a switch D-Link DGS-1100-24pv2.

snmpwalk works and scrapes the device in 3m.

snmp_exporter shows this error:

An error has occurred while serving metrics:

error collecting metric Desc{fqName: "snmp_error", help: "Error scraping target", constLabels: {module="if_mib"}, variableLabels: {}}: error walking target 192.168.240.54: error in unmarshalResponse: error decoding value: error parsing OID Value: invalid OID length

Any advice?

[tanxiao1990]

same issue , how can i fix it

[ralphjin]

https://github.com/gosnmp/gosnmp/blame/v1.38.0/gosnmp.go#L24

// MaxOids is the maximum number of OIDs permitted in a single call,
// otherwise error. MaxOids too high can cause remote devices to fail
// strangely. 60 seems to be a common value that works, but you will want
// to change this in the GoSNMP struct
MaxOids = 60

it seems that it is a limitation in gosnmp. is there any way to increase this max value?

[SuperQ]

I don't think that's related. The error returned invalid OID length is the result of a zero-length byte sequence.